Quiz 06/09/2022

An 85-year-old man presents back to your clinic for follow-up with his family for a slowly progressive neurologic decline over the past 4 years, namely with memory and cognitive decline. You have already performed a brain MRI and additional testing and suspect that the patient has Alzheimer’s dementia. The family expresses concerns over the patient’s driving. Which of the following, if true, is not a useful tool to identify driving risk according to updated practice guidelines?

A 56-year-old male with a past medical history of smoking presents to the clinic with the chief complaint of a 1-month history of progressive muscle weakness. Interestingly, he notes that his strength seems to improve with repeated use. The physical examination is notable for proximal muscle weakness of the bilateral lower extremities and areflexia in all extremities. Serology and electrodiagnostic testing confirm the diagnosis. What is the first-line therapy for symptomatic management?

A previously healthy 15-year-old male presents to the emergency room after experiencing a concussion while playing soccer. He is now back to baseline but to be thorough the ED physician orders an MRI which is shown below. What is the lesion shown in this MRI?

A 36-year-old female with a history of renal cell carcinoma with headaches and slight right arm/leg ataxia had an MRI of the brain that showed a contrast-enhancing lesion in the right cerebellum. Surgical resection was completed and histology of the lesion is shown below. This patient most likely has which of the following diagnoses?

A 10-year-old girl is brought to the clinic with a 1-month history of progressive clumsiness. Neurological examination shows significant bilateral ataxia. Imaging was performed and showed a midline lesion in the 4^th ventricle. A biopsy was performed and shown below. Based on the most likely diagnosis, what is the most appropriate treatment plan?

A 69-year-old female is brought to the emergency room by her daughter for excessive stumbling, often tripping on things on the floor. The daughter also says her mother has been behaving oddly, complaining about seeing darkness in a fully lit room, and the inability to recognize her family members. Bilateral pupillary light reflexes are normal. If symptoms are secondary to an ischemic injury, an MRI would show a lesion in which of the following regions?

A 4-month-old male with no significant past medical history was admitted to the epilepsy monitoring unit with episodes concerning for possible seizures. The family has noticed that events tend to occur when the child is angry. One episode is captured during his stay. The first symptoms appreciated were excessive crying followed by loss of tone and a few myoclonic jerks for 20 seconds. The patient then rapidly returned to baseline thereafter. There were no epileptiform discharges seen during this episode. Based on the most likely diagnosis, what is the most appropriate next step in management?

Narcolepsy is associated with which of the following HLA alleles?

Which of the following medications has the highest risk for QT prolongation?

A 35-year-old male presented for sudden onset painless central vision loss. An outside hospital emergency room physician suggested he may have had a CRAO, but recommended immediate ophthalmology outpatient evaluation. The patient was unfortunately lost to follow-up for a few months. He presents today due to a sudden onset of central vision loss in the other eye.

On your ophthalmologic exam, you note hyperemic optic nerve and tortuous central retinal vessels, without evidence of vessel cutoff. He has a central scotoma bilaterally, with peripheral vision intact. He has red color desaturation as well. MRI brain w/ and w/o contrast with fat suppression and thin cuts through the orbits is performed, and normal.

This disorder is caused by which of the following pathologic processes?